Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 693, Issue -, Pages 1124-1132Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2016.09.273
Keywords
Branched TiO2 nanorod array; Au nanoparticles; Surface plasmon resonance; Photoelectrochemical water splitting
Categories
Funding
- National Natural Science Foundation of China [61204078, 61176004, U1304505, 21405103]
- Program for Innovative Research Team (in Science and Technology) in University of Henan Province [13IRTSTHN026]
- Innovation Scientists and Technicians Troop Construction Projects of Henan Province [154200510009]
- Key Project of Science and Technology of Henan Province [122102210561, 17A150033]
- Basic and Frontier Research Programs of Henan Province [142300410420]
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Au nanoparticles modified branched TiO2 (Au/B-TiO2) arrays were synthesized and the crystallization and morphology of the branches could be well controlled by simply altering the reaction times. The B-TiO2 array composed of ultra-thin nanorod with thickness of similar to 5 nm showed enhanced photo-electrochemical performances compared to TiO2 nanorod array due to decreased resistance and increased carriers' transfer efficiency. Further, after the modification of Au nanoparticles, the photo-current density was similar to 2.5 mA/cm(2) at 1.23 V vs RHE, which was much higher than that of B-TiO2 and TiO2 nanorod array due to enhanced light harvesting ability, enhanced carriers' density that resulted from the synergistic effect of branched structure of TiO2 and SPR surface plasmon resonance (SPR) effect of Au nanoparticles. (C) 2016 Elsevier B. V. All rights reserved.
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